GE Multilin UR1HH UR Series High Voltage Power Supply Module

Description

Product Introduction & Engineering Value

Power supply failures are among the quickest ways to take a protection relay out of service. Fortunately, the GE Multilin UR1HH is designed as a field-replaceable module, allowing maintenance personnel to restore relay operation without replacing the complete Universal Relay.

The UR1HH is a first-generation high-voltage power supply module for the GE Multilin UR Series. Its modular construction supports efficient maintenance while maintaining compatibility with the UR platform used for feeder, transformer, generator, motor, and line protection applications.

Technical Specifications

Field Application & The “Trench” Experience

During a scheduled maintenance outage at a transmission substation, technicians found that a feeder protection relay repeatedly rebooted whenever the station battery voltage fluctuated. Relay diagnostics confirmed the protection logic remained intact, but the power module had deteriorated after years of continuous service.

Replacing the failed UR1HH restored stable relay operation without disturbing protection settings or communication configuration. After completing functional tests and breaker simulation, the feeder returned to service within the planned maintenance window.

Typical applications include:

• High-voltage feeder protection relays
• Transformer differential protection panels
• Industrial substation motor and generator protection systems

UR1HH

UR1HH

Transparency SOP: QA & Testing

Every UR1HH module undergoes documented inspection before shipment.

• ✔ Verify part number and hardware identification.
• ✔ Inspect PCB, terminals, connectors, and housing for mechanical damage.
• ✔ Confirm acceptable AC and DC input operation using compatible test equipment.
• ✔ Check module output stability under load.
• ✔ Perform final visual inspection and ESD-safe packaging.

New Surplus inventory is inspected for storage condition and authenticity. Refurbished modules are functionally verified before release.

The Veteran’s Tech Trap Guide

⚠️ Don’t Mix Power Module Generations Without Verification

GE introduced later-generation UR-RH/UR-SH power supply modules with different electrical characteristics. Although some generations are mechanically compatible, always verify the relay configuration and approved replacement guidance before mixing module generations.

⚠️ Confirm the Station Supply Voltage

The UR1HH is intended for high-voltage control power. Installing it in a relay powered from 24–48 VDC will prevent normal operation.

PRO TIP:

Always remove control power before replacing the module. The power supply is installed behind the relay front panel, and ESD precautions should be observed during handling to avoid damage to sensitive electronic components.

Dynamic FAQ

Q1. What is the function of the ?

The supplies operating power to GE Multilin UR Series Universal Relays and supports high-voltage AC or DC control power sources.

Q2. What input voltage does the support?

The module accepts 125–250 VDC or 100–240 VAC (50/60 Hz), making it suitable for many industrial and utility control power systems.

Q3. Can the be replaced by a UR-RHH or UR-SH module?

Later-generation power supply modules exist, but replacement compatibility depends on the relay model, firmware, and installed hardware. Always verify the approved configuration before substitution.

Q4. Is the hot-swappable?

No. Control power should be removed before installing or removing the module to prevent equipment damage and unintended relay operation.

Q5. How is a New Surplus verified?

Each unit is inspected for part number accuracy, connector condition, physical integrity, and operational performance before shipment.

Q6. Is a warranty available?

Yes. Most professional industrial automation suppliers provide warranty coverage for both New Surplus and professionally refurbished modules. Warranty terms vary according to product condition and supplier policy.